CN202816221U - Lever principle demonstration teaching aid for physics teaching - Google Patents
Lever principle demonstration teaching aid for physics teaching Download PDFInfo
- Publication number
- CN202816221U CN202816221U CN 201220221440 CN201220221440U CN202816221U CN 202816221 U CN202816221 U CN 202816221U CN 201220221440 CN201220221440 CN 201220221440 CN 201220221440 U CN201220221440 U CN 201220221440U CN 202816221 U CN202816221 U CN 202816221U
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- lever
- teaching
- force
- teaching aid
- lever principle
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Abstract
The utility model relates to a teaching aid for physics teaching, particularly to a lever principle demonstration teaching aid for physics teaching. The demonstration teaching aid comprises a base 1, a support 2, a dynameter 3, a spring 4, a first hinge shaft 5, a second hinged shaft 6, a lever 7, a weight ball 8, and concave supporting grooves 9. A lever 1 is provided with scales and the plurality of concave supporting grooves 9. By putting the weight ball 8 in different concave trays 8, and viewing the numerical value of the dynameter 3 and the scale on the lever 7, a relational expression of forces, arms of force, and moments of force of the lever 7 at two sides of the support 2 can be calculated. The lever principle demonstration teaching aid for physics teaching can be used to directly and clearly explain the relations of force, arm of force, and moment of force in the lever principle, can facilitate students to understand and grasp the level principle, arouse learning interest of the students, and improve teaching efficiency and teaching effects of teachers.
Description
Technical field
The utility model relates to a kind of physics teaching teaching aid, is specifically related to a kind of physics teaching lever principle demonstration teaching aid.
Background technology
When physics teaching, the demonstration of lever principle does not also have the ocular demonstration teaching aid, and the teacher that concerns of power, the arm of force, moment is abstract explanation, and the student is not easy to understand, and it is difficult to accept, and teaching efficiency is poor.Design a kind of lever principle demonstration teaching aid is necessary very much.
Summary of the invention
The purpose of this utility model is that the teacher that concerns who solves lever principle power, the arm of force, moment in the physics teaching explains abstract drawback, and the student is not easy to understand, and it is difficult to accept, the problem that teaching efficiency is poor, provide a kind of simple to operate, simple and clear, understandable lever principle demonstration teaching aid.
The purpose of this utility model realizes by following technological means: a kind of physics teaching lever principle demonstration teaching aid includes base, support, force meter, spring, hinge one, hinge two, lever, counterweight ball.Be provided with scale and a plurality of spill bracket on the lever.Described chassis left side 1/5th places are fixedly connected with support.
Described lever left end is connected with the spring upper end by hinge one.
/ 5th places, described lever left side are connected with support by hinge two.
Described spring lower end is connected with the base left end by force meter.
The utlity model has following obvious advantage: by the counterweight ball being put into different spill brackets, check that the numerical value of force meter is in conjunction with the scale on the lever, the relation of power, the arm of force, moment in the explanation lever principle that can be simple and clear, be convenient to the student to understanding and the grasp of lever principle, improve teacher's efficiency of teaching and teaching efficiency.
Description of drawings
Accompanying drawing is structural representation of the present utility model.Such as accompanying drawing, the utility model comprises: base 1, support 2, force meter 3, spring 4, hinge 1, hinge 26, lever 7, counterweight ball 8, spill bracket 9.
Embodiment
Below in conjunction with description of drawings and embodiment the utility model is described in further detail:
Such as accompanying drawing, the utility model comprises: base 1, support 2, force meter 3, spring 4, hinge 1, hinge 26, lever 7, counterweight ball 8, spill bracket 9.Be provided with scale and a plurality of spill bracket 9 on the lever 1./ 5th places, base 1 left side are fixedly connected with support 2.Lever 7 left ends are connected with spring 4 upper ends by hinge 1./ 5th places, lever 7 left sides are connected with support 2 by hinge 26.Spring 4 lower ends are connected with base 1 left end by force meter 3.
By counterweight ball 8 being put into different spill brackets 9, check the numerical value of force meter 3 in conjunction with the scale on the lever 7, calculate power, the arm of force of the lever 7 of support 2 both sides, the relational expression of moment.
Use the relation of power, the arm of force, moment in the simple and clear explanation lever principle of the utility model energy, be convenient to the student to understanding and the grasp of lever principle, motivate students' interest in learning, improve teacher's efficiency of teaching and teaching efficiency.
Claims (4)
1. physics teaching lever principle demonstration teaching aid, comprise: base (1), support (2), force meter (3), spring (4), hinge one (5), hinge two (6), lever (7), counterweight ball (8), spill bracket (9) is characterized in that: be provided with scale and a plurality of spill bracket (9) on the lever (1).
2. a kind of physics teaching lever principle demonstration teaching aid according to claim 1 is characterized in that: 1/5th places, base (1) left side are fixedly connected with support (2).
3. a kind of physics teaching lever principle demonstration teaching aid according to claim 1, it is characterized in that: lever (7) left end is connected with spring (4) upper end by hinge one (5), and 1/5th places, lever (7) left side are connected with support (2) by hinge two (6).
4. a kind of physics teaching lever principle demonstration teaching aid according to claim 1 is characterized in that: spring (4) lower end is connected with base (1) left end by force meter (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220221440 CN202816221U (en) | 2012-05-08 | 2012-05-08 | Lever principle demonstration teaching aid for physics teaching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220221440 CN202816221U (en) | 2012-05-08 | 2012-05-08 | Lever principle demonstration teaching aid for physics teaching |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202816221U true CN202816221U (en) | 2013-03-20 |
Family
ID=47875067
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220221440 Expired - Fee Related CN202816221U (en) | 2012-05-08 | 2012-05-08 | Lever principle demonstration teaching aid for physics teaching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202816221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810054A (en) * | 2016-05-27 | 2016-07-27 | 薛沐辉 | Device for demonstrating lever moment principle |
-
2012
- 2012-05-08 CN CN 201220221440 patent/CN202816221U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105810054A (en) * | 2016-05-27 | 2016-07-27 | 薛沐辉 | Device for demonstrating lever moment principle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130320 Termination date: 20140508 |